PLN-1EOL, līnijas gala elements, Plena, Bosch

PLN‑1EOL Plena End-of-Line Board - Plena end-of-line board is a PCB designed to detect the 20 kHz pilot tone generated by a supervised public address or voice alarm system. It activates a voltage free switch in the presence of a 20 kHz signal (pilot tone) above 5 V, as well as an LED for easy visual confirmation of operation. Plena end-of-line boards monitor the presence of a pilot tone on a loudspeaker line. The board connects at the end of a loudspeaker line and detects the 20 kHz pilot tone signal. Pilot tone detection on 100 V loudspeaker lines. Voltage free switch 200 V 1 A and LED indications of pilot tone. EN 54‑16 certified.